Schema-Root.org logo

 

  cross-referenced news and research resources about

 quantum mechanics

Schema-Root.org logo
images:  google   yahoo YouTube
spacer

updated Mon. March 19, 2018

-
Quantum mechanics runs hot in a cold plasma. Date: March 15, 2018; Source: University of British Columbia; Summary: Researchers have found a new system that could help yield 'warmer' quantum technologies. Share: FULL STORY ...
Quantum mechanics has fundamental speed limits--upper bounds on the rate at which quantum systems can evolve. However, two groups working independently have published papers showing for the first time that quantum speed limits have a classical counterpart: classical speed limits. The results are ...

Though his work upended what was thought to be a fundamental truth of black holes, Hawking radiation actually did some reconciliation. His work connected two conflicting concepts in theoretical physics: quantum mechanics and the theory of relativity. "Those are the two pillars on which physics now rests, ...
"Instead, we use light as a tool to facilitate a quantum mechanical effect. And that creates the new kind of ... The rules of quantum mechanics dictate that every time an atom changes its state, the atom must pay a price in the form of energy, just like climbing a hill. While a smooth transition may appear as a ...
"We learned that Einstein's theory is incomplete. In fact, Einstein himself was looking for a theory of everything that would unite quantum mechanics, atomic physics, with black holes. And so what Hawking did was he showed that black holes are not really black, overturning decades of thinking," Kaku said.
The tiniest levels of the universe are governed by the laws of quantum mechanics. Here things start to get very weird and counterintuitive. Units of information in the realm of quantum mechanics are called qubits. Headrick studies the quantum entanglement of qubits, a very strange phenomenon unique to ...

What could be described as a physics super-group has succeeded in setting the stage for the development of a quantum mechanical field called ... that a carbon-based magnet can carry waves of quantum mechanical magnetisation - units known as magnons - and convert them into electrical signals.
Enormous disks of stars or debris can operate under the same rules as subatomic particles, changing based on the Schrodinger equation, which physicists use to model quantum-mechanical systems. Viewing space ... And instead, I get this equation, which is really the cornerstone of quantum mechanics.
The twentieth century gave birth to two of the most important Physics theories of nowadays: Special/General Relativity and Quantum Mechanics. These two theories have accompanied humanity in the questions of what is space, what is time and what is matter; they have taught us to characterize these ...
The wisdom of experience goes a long way. That may hold especially true in complex topics such as quantum mechanics. When studying the science that explores properties of molecules, atoms and their constituents -- electrons, protons and neutrons -- along with other, more esoteric particles, any leg up ...
Particles quench in a disordered web of quantum interactions to form a state of many-body localization. Credit: Ed Grant. University of British Columbia researchers have found a new system that could help yield 'warmer' quantum technologies. Quantum technologies such as quantum computers have the ...
Schrodinger's equation is a fundamental equation of quantum mechanics that describes how particles behave at the subatomic level. Caltech researchers were astonished to learn, however, that the same equation popped up when they modeled the behavior of self-gravitating astrophysical disks.
Theorists have long sought to understand how black holes evaporate in a way that preserves information about what fell in, as required by quantum mechanics. In 2012, Joe and his collaborators sharpened this problem, finding that either general relativity, or quantum mechanics itself, must break down.
The wisdom of experience goes a long way. That may hold especially true in complex topics such as quantum mechanics. When studying the science that explores properties of molecules, atoms and their constituents -- electrons, protons and neutrons -- along with other, more esoteric particles, any leg up ...
Not only that: if we consider pilot wave gravity to be correct, it could finally help unite the two biggest ideas in physics - general relativity and quantum mechanics. "There are two main conclusions to be drawn from the paper," said Castro. "The first is that some physical features of the solar System are best ...
In quantum communication, the participating parties can detect eavesdropping by resorting to the fundamental principle of quantum mechanics -- a measurement affects the measured quantity. Thus, an eavesdropper can be detected by identifying traces his measurements of the communication channel ...
Using computational simulations performed at the Vienna Scientific Cluster, the team discovered coexisting quantum-mechanical interactions in the compound silver-bismuth-oxide. Bismuth, a post-transition metal, enables the spin of the electron to interact with its own motion -- a feature that has no ...

quantum mechanics is certainly one the most puzzling branches of physics. While a mathematical formalism that describes quantum mechanics is well known since almost one century and has been thoroughly tested experimentally, the interpretation of such formalism and whether it hides more ...
Although the laws of general relativity and quantum mechanics work exceptionally well in their own spheres, some of the rules that govern one area don't work in the other, and vice-versa. For instance, Relativity explains the gravitational force as it relates to bodies on Earth or in space. But it falls apart on ...
An idea for an experiment that could unite the stubborn fields of quantum mechanics and general relativity has been given new life by two groups of physicists from the UK. The fact that quantum theory doesn't play well with gravity is a massive stumbling block in physics, one that has long eluded some of ...
Experts from the University of Southampton, Queen's University Belfast and UCL have formed a consortium with European universities and British photonics technology company M Squared to test the limits of one of the core principles of quantum mechanics - the mind-boggling physical laws that allow ...
Despite huge research efforts, the relation between the two big theories of the 20th century - general relativity and quantum mechanics is still not clearly understood. The idea that all interactions are fundamentally quantum, albeit extremely successful with all non-gravitational interactions, seems to fail in ...
Within their domains, both quantum mechanics and Einstein's general theory of relativity seem to work incredibly well, no matter what problems physicists throw at them. However, some of the physical rules overseeing the theories appear to be fundamentally incompatible, and a unified theory of quantum ...
The research concerns the crucial role of "phonons," quantum-mechanical phenomena that describe how vibrations travel through a material's crystal structure. The phonons interact, sometimes combining and splitting into new phonons, changing direction and behavior. This "scattering" is fundamental to ...
As it is estimated, such experiments deal with good old friend, quantum mechanics that always succeeds in our brittle actuality and marvel the mind. Typically each of the two teams, one in the USA, the other in Europe, conceived an exploratory setup, one pertaining to ultra-cold atoms, and another with light ...
Deady is an MIT graduate and director of the physics Program at Bard College where he has been teaching for the last 30 years. He will explain the basics of quantum physics and provide a historical survey of quantum mechanics, leading up to current experiments and theories that weigh on the questions ...
"Previous attempts considered statements of general relativity and quantum mechanics to be applicable to the same world. My approach separates the two--quantum mechanics allows for a quantum state to be a 'superposition' of many classical worlds; statements of quantum mechanics apply to the ...
But we've known for more than 100 years that our microscopic world is fundamentally quantum mechanical. And in quantum mechanics, you can have systems. Your computer, for instance, or your chair can be placed in two different states at once -- that's the idea of quantum superpositions. In other words ...
The world around us makes sense in only three spatial dimensions: left and right, up and down, forward and backward. Mathematically, on the other hand, some very clever people have argued that reality may be comprised of at least four spatial dimensions. Modern string theory even goes as far as ...
A pair of researchers have uncovered a potential bridge between general relativity and quantum mechanics -- the two preeminent physics theories -- and it could force physicists to rethink the very nature of space and time. Albert Einstein's theory of general relativity describes gravity as a geometric ...
quantum mechanics is a pillar of modern science and technology, and has benefited human society for a century. The wave function, also known as the quantum state, is the description of a quantum object and plays a central role in quantum mechanics. Nonetheless, the nature of the wave function is still ...
Researchers from the University of Cambridge have taken a peek into the secretive domain of quantum mechanics. We can verify old predictions of quantum mechanics, for example that particles can exist in different locations at the same time. - David Arvidsson-Shukur. In a theoretical paper published in ...
quantum mechanics is the wonderfully successful theory of how the world behaves at the microscopic level, while on large scales space and time are wedded together in Einstein's famous general theory of relativity. Reconciling how both of these ideas can be true at the same time has been a longstanding ...
If you were to run this experiment and not know anything about quantum mechanics (a la Stern and Gerlach), you might expect one of two results. [The 5 Most Ingenious Experiments in astronomy and physics]. In the most boring possible result, the neutrality of the atoms would nullify any interaction with the ...
Born is remembered for his major contributions to quantum mechanics, a field of study that has led to the invention of computers, lasers, medical imaging devices (MRI) and more. » RELATED: Famous geniuses in world history. Here are six things to know about Born and his groundbreaking work in ...
In the process, they have gathered evidence suggesting that quantum mechanics plays an important role in photosynthesis, in bird navigation, and perhaps in our sense of smell. There is even a speculative line of thought that quantum processes must have governed the origin of life itself and the ...
Quantum entanglement is one of quantum mechanics' most mystifying phenomena. When two particles -- such as atoms, photons, or electrons -- are entangled, they experience an inexplicable link that is maintained even if the particles are on opposite sides of the universe. While entangled, the particles' ...
"By revealing the fundamental influence of initial quantum correlations on time's arrow, our experiment highlights the subtle interplay of quantum mechanics, thermodynamics and information theory," the researchers write in the article uploaded to arXiv. "[The experiment] establishes that the arrow of time is ...
The counterintuitive predictions of quantum theory have now been experimentally confirmed with unprecedented rigor. Yet, the question of how to interpret the meaning of these predictions remains controversial. A Wikipedia table summarizing different interpretations of quantum mechanics included no less ...
"Nature isn't classical, dammit," Feynman told his audience, "and if you want to make a simulation of nature, you'd better make it quantum mechanical. ... quantum mechanics is also disrupting another technology used in particle physics: the sensor, the part of a particle detector that picks up the energy from ...
black holes are the source of a major quandary when it comes to our understanding of physics; either they can destroy information, which contradicts what we know about quantum mechanics, or they seemingly disregard Einstein's theory of relativity. However, it's now thought by some that the many worlds ...
chemistry is governed by quantum mechanics, so scientists solve the quantum mechanical equation called the Schrodinger equation, which is the equivalent of Newton's equation in the small world - way down under - electrons, atoms, molecules - they actually don't follow Newton's Law, they follow ...
Even after an acclimatisation period of more than 100 years, quantum mechanical phenomena still conflicts with our intuition of how nature works. quantum mechanics confuses and marvels us in equal measure. We have long known that particles can be in a superposition--both here and there at the same ...
... from the Big Bang to black holes, from quarks to quantum mechanics, and from the search for planets to the search for life in the universe.
However, one of the properties of quantum mechanics, described in the Schroedinger's cat paradox, says the act of observing the state of an ...
"quantum mechanics is not something that just exists on paper," says van Calmthout. "It is perfectly real and is a crucial part of what makes the ...
The Cold Atom Laboratory, built by Jet Propulsion Laboratory and funded by NASA, will study atoms and their interactions with the environment ...
This map is set in a highly quantum mechanical state as a superposition ... how quantum mechanics maintains interactions between the valleys ...
With the quantum mechanics model, data computation is conducted in the quantum bits or qubits. In the qubits, data are able to take more ...
"The tunneling effect refers to the quantum mechanical process where a particle moves through a barrier that in classical physical theory should ...


 

news and opinion


 


 


 


 


schema-root.org

   theories
     quantum mechanics

physics theories:
     quantum mechanics
     string